From fdf6a9cc2bcbbf718f7c30592076aa758b960cf1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luka=20Marku=C5=A1i=C4=87?= <luka.markusic@microblink.com>
Date: Thu, 4 Aug 2022 13:52:04 +0200
Subject: [PATCH] Test appending to empty file

---
 pkg/commands/oscommands/os_test.go | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/pkg/commands/oscommands/os_test.go b/pkg/commands/oscommands/os_test.go
index abbdc9068..969224405 100644
--- a/pkg/commands/oscommands/os_test.go
+++ b/pkg/commands/oscommands/os_test.go
@@ -142,6 +142,7 @@ func TestOSCommandAppendLineToFile(t *testing.T) {
 	type scenario struct {
 		path  string
 		setup func(string)
+		test  func(string)
 	}
 
 	scenarios := []scenario{
@@ -152,6 +153,20 @@ func TestOSCommandAppendLineToFile(t *testing.T) {
 					panic(err)
 				}
 			},
+			func(output string) {
+				assert.EqualValues(t, "hello\nworld\n", output)
+			},
+		},
+		{
+			filepath.Join(os.TempDir(), "emptyTestFile"),
+			func(path string) {
+				if err := ioutil.WriteFile(path, []byte(""), 0o600); err != nil {
+					panic(err)
+				}
+			},
+			func(output string) {
+				assert.EqualValues(t, "world\n", output)
+			},
 		},
 		{
 			filepath.Join(os.TempDir(), "testFileWithNewline"),
@@ -160,6 +175,9 @@ func TestOSCommandAppendLineToFile(t *testing.T) {
 					panic(err)
 				}
 			},
+			func(output string) {
+				assert.EqualValues(t, "hello\nworld\n", output)
+			},
 		},
 	}
 
@@ -173,7 +191,7 @@ func TestOSCommandAppendLineToFile(t *testing.T) {
 		if err != nil {
 			panic(err)
 		}
-		assert.EqualValues(t, "hello\nworld\n", string(f))
+		s.test(string(f))
 		_ = os.RemoveAll(s.path)
 	}
 }